Wikimedia MediaWiki 1.30.0 through 1.32.1 has XSS. Loading user JavaScript from a non-existent account allows anyone to create the account, and perform XSS on users loading that script. Fixed in 1.32.2, 1.31.2, 1.30.2 and 1.27.6.
https://www.debian.org/security/2019/dsa-4460
https://seclists.org/bugtraq/2019/Jun/12
https://phabricator.wikimedia.org/T207603
https://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html
Source: Mitre, NVD
Published: 2019-07-10
Updated: 2019-07-16
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.00332